Banker Ensnared in Galleon Case

By

Susan Pulliam And

Michael Rothfeld

Updated Jan. 23, 2011 10:56 p.m. ET

A Morgan Stanley banker is under investigation by prosecutors for allegedly leaking information that was relayed to Galleon Group hedge-fund founder Raj Rajaratnam about a 2006 merger involving Advanced Micro Devices Inc., people close to the situation say.

Kamal Ahmed, 42 years old, is the first Wall Street banker publicly drawn into the Galleon investigation. The government is preparing for Mr. Rajaratnam's trial late in February....